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What I think is the real issue is what I have already said: most high school seniors don't really know what they want to do.
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<p>And to that I'll say that there are also many who do know what they want to do. Some are more sure than others. To say that a student shouldn't go to MIT because there's a 5% chance he/she will change majors is ridiculous. To say that a student with an undecided major shouldn't go to MIT is very reasonable. </p>
<p>We're all arguing about a general population when we should be looking at this on a case-by-case basis. It's silly to talk about a hypothetical person without knowing the details of what this hypothetical person wants.</p>
<p>And for the record, when I was 4 years old, I wanted to do construction. 19 years later, I'm doing it! lol. Sure I'm not the ordinary case, but there are plenty of high school seniors who do know what they want to study. Probably not the majority, but there's at least a sizable population.</p>